Enamels and enamelling; an introduction to the preparation and ...
Enamels and enamelling; an introduction to the preparation and ...
Enamels and enamelling; an introduction to the preparation and ...
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COMPOSITION OF MASSES FOR GROUND ENAMELS. 123<br />
Owing <strong>to</strong> <strong>the</strong> presence of magnesia<br />
this mass is more<br />
refrac<strong>to</strong>ry th<strong>an</strong> No. 1, but is superior <strong>to</strong> <strong>the</strong> latter in m<strong>an</strong>y<br />
ways, being much easier <strong>to</strong> apply, <strong><strong>an</strong>d</strong> adhering strongly<br />
<strong>to</strong> <strong>the</strong> superior-imposed cover enamel.<br />
Flint meal<br />
Borax<br />
Refrac<strong>to</strong>ry Mass No. 1.<br />
fused <strong>to</strong>ge<strong>the</strong>r <strong><strong>an</strong>d</strong> ground along with<br />
Silica<br />
Clay<br />
Flint meal<br />
Borax<br />
Refrac<strong>to</strong>ry<br />
fused <strong>to</strong>ge<strong>the</strong>r <strong><strong>an</strong>d</strong> ground with<br />
Silica<br />
Clay<br />
Magnesia<br />
Flint meal<br />
Borax<br />
Felspar .<br />
Mass No. 2.<br />
Fusible Mass No. 1.<br />
fused <strong>to</strong>ge<strong>the</strong>r <strong><strong>an</strong>d</strong> ground with-<br />
Clay<br />
Felspar<br />
Magnesia<br />
Fusible Mass No. 2.<br />
Flint meal<br />
Borax<br />
White Lead .......<br />
fused <strong>to</strong>ge<strong>the</strong>r <strong><strong>an</strong>d</strong> ground with<br />
Flint meal<br />
. . Clay. / . .<br />
Chalk . .- .' ., ....<br />
Magnesia . _,.. . . . . ^ .<br />
50 parts.<br />
30<br />
18<br />
18<br />
50 parts.<br />
30<br />
15<br />
13<br />
1 part.<br />
30 parts.<br />
25<br />
30<br />
10-75<br />
6-00<br />
1-25<br />
30 parts.<br />
18<br />
9-5<br />
3<br />
8-25<br />
2-00<br />
0-90
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